Just asked my dad about it again and a correction: he was indeed slapped across the face and hit across the wrists with a ruler by nuns in first and second grade, but it was not at the school I attended. He attended that school too, but only in later grades. This woulda happened around 1966/1967. He also around that time saw a nun pick up a kid whose hair was deemed too long, hang him upside down by the legs, and literally mop the floor with his hair. Yeah...He also remembers being grabbed by the back of the neck in fifth grade for arguing with another teacher, this one not a nun.